[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.22"]
[Round "7"]
[White "Langeweg, Kick"]
[Black "Rellstab, Ludwig Sr"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Nc6 13. dxc5 dxc5 14. Nf1 Be6 15. Ne3 Rad8 16. Qe2 g6 17. a4 c4 18. Ng5 Bc8 19. axb5 axb5 20. b3 cxb3 21. Bxb3 Na5 22. Nd5 Nxd5 23. Bxd5 Nc4 24. Rb1 Bd7 25. Qf3 Be8 26. Qg3 Kg7 27. Qh4 h5 28. Qg3 Bd7 29. Nf3 Bf6 30. Nh4 Rg8 31. Bg5 Bxg5 32. Qxg5 Qd6 33. Rxb5 Kh7 34. Bxc4 Bxb5 35. Bxf7 Rdf8 36. Bxg8+ Rxg8 37. Nf3 Re8 38. Ra1 Re7 39. Ra5 Bc6 40. Ra6 Re8 41. Ra7+ Bd7 42. Nxe5 1-0